WO2014016020A1 - Élément à filetage extérieur, assemblage par complémentarité de forme et moteur à combustion interne - Google Patents

Élément à filetage extérieur, assemblage par complémentarité de forme et moteur à combustion interne Download PDF

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Publication number
WO2014016020A1
WO2014016020A1 PCT/EP2013/061120 EP2013061120W WO2014016020A1 WO 2014016020 A1 WO2014016020 A1 WO 2014016020A1 EP 2013061120 W EP2013061120 W EP 2013061120W WO 2014016020 A1 WO2014016020 A1 WO 2014016020A1
Authority
WO
WIPO (PCT)
Prior art keywords
external thread
circumferential direction
receiving element
forming section
thread element
Prior art date
Application number
PCT/EP2013/061120
Other languages
German (de)
English (en)
Inventor
Hartmut Flaig
Original Assignee
Hartmut Flaig
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hartmut Flaig filed Critical Hartmut Flaig
Priority to EP13732374.7A priority Critical patent/EP2831433B1/fr
Priority to PL13732374T priority patent/PL2831433T3/pl
Publication of WO2014016020A1 publication Critical patent/WO2014016020A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt

Definitions

  • the invention relates to an external thread element, in particular a (headless) external threaded pin according to the preamble of claim 1, a positive connection, comprising such an external thread element according to claim 10 and an internal combustion engine according to claim 12.
  • the present invention seeks to provide an improved external thread member, in particular for use in an engine block, with which a secured against loosening connection with a receiving element, in particular an engine block is produced. Further the object is to provide a correspondingly improved connection between external thread element and receiving element and a correspondingly improved internal combustion engine. This object is achieved in terms of the external thread member having the features of claim 1, with respect to the positive connection with the features of claim 10 and with respect to the internal combustion engine having the features of claim 12.
  • Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features disclosed in the description, the claims and / or the figures fall within the scope of the invention.
  • the invention is based on the idea to provide the external thread element in the region of its front, located in the direction of insertion end, in particular frontally, with anchoring means which are designed such that with these by turning the external thread element in the tightening circumferential direction and the associated feed material of Receptacle is plastically deformed into at least one intended, in particular end-side recess of the external thread member, so as to provide a positive connection between the external thread member and receiving element and thereby to increase a solving torque required for releasing the external thread member.
  • an anchoring means provided on the external thread element creates a releasing torque-increasing, circumferentially effective form-fitting connection (axial meshing) between the externally threaded element and a receiving element receiving the external thread element
  • the anchoring means provided for this purpose on the external thread element preferably in the axial direction, extend in the axial direction comprise extending forming portion which is adapted to be displaced with this due to the combined movement of the external thread member when tightening in the tightening circumferential direction and in the axial direction of the receiving element material in the tightening circumferential direction and in an adjacent to the forming section in the tightening circumferential direction axial recess, so that a rotational movement of the external thread element against the tightening circumferential direction, that is made difficult in a Léemboseuros.
  • the forming section does not separate the receiving element material from the rest of the receiving element, but that a firm, material-fit connection between the material displaced into the at least one recess and the rest of the receiving element, in particular the engine block remains, in order to increase the necessary release torque safely.
  • the recess in the tightening circumferential direction which is limited by the forming section, is delimited by a further forming section or by its wall, to which a recess (own) is assigned, which in turn is preferred by another, in turn, in the tightening circumferential direction. ie a third forming section or again bounded by the former forming section.
  • the number of forming sections can vary and depends in particular on the outer circumference of the external thread element.
  • the recess associated with a forming section and bounded by the forming section opposite to the tightening circumferential direction in the tightening circumferential direction is limited by a forming section (which is preferred) - it is also possible for the recess in the tightening circumferential direction to be from an axial extension is limited, for example, the material of the receiving element does not reshape, but apart from the receiving element, for example by cutting.
  • the male threaded member is a headless male threaded pin, i. formed as an external thread bolt, wherein preferably the largest radial extent has the external thread.
  • an embodiment of the male thread element is possible as a cap screw with a male screw radially outwardly projecting screw head.
  • the external thread element comprises a, preferably end-side drive for introducing a torque in the tightening circumferential direction.
  • the external thread member for example, must be fixed by clamping to introduce a torque in the tightening circumferential direction.
  • a wall portion of a recess on the forming section in the tightening circumferential circumferential wall limiting the wall is formed so that upon release of the receiving element, ie upon rotation of the receiving element against the Festziehstedsplatz overcome by interaction between the deformed material of the receiving element and the wall portion resulting resistance must become. It is preferred if the aforementioned wall section extends over the greater part of the total extension of the aforementioned wall. Preferably, the aforesaid wall section at the same time limits a forming section adjacent to the recess in the tightening circumferential direction, or another axial extension.
  • a wall portion of the aforementioned wall in the tightening circumferential direction increases in the direction of the rear end of the male threaded element, whereby the greatest resistance against loosening of the male threaded element can be achieved.
  • the first and / or the second alternative is selected, ie that the wall portion either parallel to the axial extent of the male thread element or, which is most preferred, although increases against the tightening circumferential direction towards the rear end of the external thread member, but with a greater pitch than the pitch of the external thread.
  • the recess defining wall portion of the forming section either parallel to the axial extension of the external thread member and thus perpendicular to a Radial plane or in the tightening circumferential direction towards the rear end increases, that is inclined in the tightening circumferential direction.
  • a single forming section is provided with a single, associated axial recess for receiving displaced material, but if several, in particular uniform, circumferentially spaced Umformabitese are provided with each in the tightening circumferential direction arranged in front of recess This further increases the resistance to loosening of the external thread element. It is particularly preferred if in each case in the circumferential direction between two recesses a forming section is provided, which further preferably at its axially front end has an edge which preferably extends in the radial direction, and run to the wall sections delimiting each of the recesses ,
  • an embodiment of the externally threaded element wherein one of the plurality of recesses in the tightening circumferential direction limiting wall in the tightening circumferential direction extends to an axially front peripheral edge of an adjacent in the tightening circumferential Umformabiteses, ie forms the aforementioned edge, in particular by the wall in the tightening circumferential direction towards front axial end rises.
  • an edge angle ie an angle between two flanks delimiting the forming edge, is less than 90 °, more preferably less than 80 °, and most preferably this angle is between about 40 ° and 79 °.
  • At least one forming section preferably all forming sections are bounded by two, preferably angled, mutually extending walls, namely a first wall, which provided in the tightening circumferential direction before the forming section Restricted limited and a second wall defining a counter to the tightening circumferential direction adjacent recess, said recess is not assigned to the aforementioned forming section, but a counter to the tightening circumferential direction adjacent Umformablie such that this receiving element material can mold into this.
  • the two aforementioned walls, namely the first and the second wall preferably include an angle of less than 90 ° and converge towards a common forming edge of the forming section.
  • the two walls end with (small) distance from each other, so that between the peripheral walls, a region is limited, with which the external thread member is supported on the internal thread opening base.
  • care must be taken to keep the areal extent of this area small in order to ensure movement of the externally threaded element into the receptacle material.
  • the at least one forming section in particular if all forming sections, even more preferably only the forming sections (subsequently) cured to thereby optimally further material of a receiving element to be connected to the external thread element, in particular a motor block, in the associated recess to be able to deform. It is particularly expedient in this case if the external thread element, at least the forming sections which are preferably formed integrally with the external thread element, are formed of a harder material than the material of the receiving element to be formed.
  • the external thread element As already indicated, it is preferred to design the external thread element as a cold extruded part.
  • the invention also leads to a form-locking connection, comprising a preferably trained as described above external thread member and a receiving element, in particular a motor block or a gear housing, wherein the external thread of the external thread member is screwed to an internal thread of an internal thread opening of the receiving element and into the at least one recess of the receiving element ( By means of the associated forming section) receiving element material is deformed, which is materially connected to the rest, that is not deformed receiving element material.
  • the entire external thread element is formed of a harder material than the receiving element used with this.
  • the external thread element preferably consists of a steel and the receiving element of an aluminum alloy. In principle, it is sufficient if the at least one forming section of the external thread element, for example by subsequent hardening after a forming step, is harder than the material of the receiving element to be deformed.
  • the form-locking connection preferably comprises an engine block, on which, for example, by means of the external thread element, a cylinder head and / or a manifold sheet is / are fixed.
  • the positive connection for example, comprise a transmission housing as a receiving element for the male threaded element, wherein by means of the male threaded element on the transmission housing, for example, a gear housing cover is fixed.
  • the invention leads to the on an internal combustion engine, in particular for a motor vehicle, with a, in particular made of an aluminum alloy or gray cast iron engine block and at least one received in the engine block male thread element, which is designed according to the concept of the invention, wherein the external thread of the external thread member is screwed to an internal thread of an internal thread opening of the engine block and in the at least one recess of the external thread member engine block material is deformed by means of the associated forming section, which materially with the non-deformed engine block material is connected, and wherein the externally threaded member passes through an opening in a cylinder head and an opening aligned with this opening in a manifold sheet, which is fixed by means of a screwed with the external thread of the male thread member female thread member, in particular an internally threaded nut on the cylinder head.
  • 1 is a side view of a formed as a cold extruded part
  • FIG. 2 is a perspective view of the externally threaded element according to FIG. 1, FIG.
  • Fig. 3 is a perspective view of the
  • Fig. 4 is a positive connection with a
  • Fig. 5 is a detail view of a positive connection, in the
  • Receiving element material is displaced into a recess of the external thread member
  • Fig. 6 is a detail of an alternative
  • Figs. 1 to 3 designed as a cold extruded male thread member 1 is shown in the preferred embodiment as a headless external threaded pin.
  • the external thread element 1 comprises a front end 2, which is shown in Fig. 1 below and in the direction of an axial insertion direction E front. From this front end 2 spaced over an external thread 3 is an axially rear end 4, in which a drive, not shown, for example, a hexagonal drive or a Torxantrieb or the like. Is formed.
  • the external thread 3 forms the largest outer diameter of the external thread element 1 and extends over most of its axial extent.
  • an externally threaded cylinder portion 5 which is frontally provided with anchoring means 6.
  • the external thread 3 does not extend in the shown (preferred) embodiment directly to the front end 2, since usually a Internal thread of an internal thread opening of a receiving element using the external thread member not to the axial end of the opening extends, since corresponding thread cutting tools usually can only bring a thread to an axial distance to the bore end.
  • the cylinder portion 5 overcomes this axial distance and allows the anchoring means to be able to interact directly with the receiving element material.
  • the anchoring means for producing a positive anchoring in the receiving element a plurality of uniformly circumferentially spaced Umformabitese 7, each comprising an axially forward and radially extending forming edge, wherein the adjacent to the respective Umformkante 8 Flanks in the embodiment shown include an angle of about 70 °.
  • each recess 9 is bounded by one of the forming section opposite in the tightening circumferential direction wall 10, which increases against the tightening direction F toward the rear end 4 and with a slope which is greater than the thread pitch of the external thread 3. Further the recess 9 on the counter to the tightening circumferential direction F circumferential side bounded by a wall 1 1, in the shown Embodiment parallel to axial extension of the external thread element 1 extends.
  • each recess 9 is located in the circumferential direction between two Umformabroughen 7, wherein the wall 1 1 of a first of the Umformabroughe 7, the associated, adjacent in the tightening circumferential direction recess 9 on the counter to the tightening circumferential direction located peripheral side and this recess 9 on the wall 10 delimiting the tightening circumferential direction side is already a wall of the adjacent forming section 7.
  • a positive connection 12 in the concrete embodiment, an internal combustion engine 13 is shown.
  • an aluminum alloy receiving element 14 which is formed in the concrete embodiment of an engine block 15.
  • the internal thread 17 does not extend to the axial (deep) end of the internal thread opening 16, but ends with axial distance to this. This distance is bridged by the cylinder portion 5 of the external thread element 1, which engages with its front-side anchoring means 6 positively in the material of the receiving element 14 (engine block 15).
  • the externally threaded element 1 protrudes from the receiving element 14 and passes through an opening 18 in a cylinder head 19 and an opening 20 aligned with the opening 20 in a elbow plate 21 of an exhaust manifold.
  • the manifold sheet 21 is clamped by means of an internal thread member 22 in the direction of the cylinder head 19, wherein in the embodiment shown between Header sheet 21 and cylinder head 19, a seal 23 is received, which is also penetrated axially by the male thread member 1 with its external thread 3, the female thread member 22 is screwed.
  • a section of the produced positive connection is shown schematically and enlarged.
  • a recess 9 which is delimited by two walls 10, 1 1, wherein the wall 10 located in the tightening circumferential direction F increases counter to the tightening circumferential direction F in the axial direction towards the rear end of the externally threaded element.
  • receiving element material 24 is formed by means of the associated forming section 7 and is supported on the wall 10, so that a positive connection is made in the axial direction, which acts in the circumferential direction and a release of the external thread member 1 against the tightening circumferential direction difficult.
  • each forming section is limited by two walls 10, 1 1, which are arranged at an angle to each other and which meet at the (peak) forming edge 8.
  • Fig. 6 shows a detail of a (slightly) other positive connection. The essential difference is that the respective walls bounding a forming section 7 do not run on a pointed forming edge, but end with a circumferential distance on a support surface 25 whose surface extension must be selected so that the supporting force advances the forming section in the axial direction in the Receiving element material 24 is not prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Dowels (AREA)

Abstract

L'invention concerne un élément à filetage extérieur (1), en particulier une tige à filetage extérieur, destiné à être ancré dans un élément de réception (14), en particulier dans un bloc moteur (15), et comportant un filetage extérieur (3), de préférence un mécanisme d'entraînement pour l'introduction d'un couple dans une direction périphérique de serrage (F), une extrémité axiale avant orientée dans une direction d'introduction (E), et une extrémité axiale arrière (4) opposée à l'extrémité avant. Selon l'invention, dans la partie de l'extrémité avant (2) se trouvent des moyens d'ancrage (6) permettant l'ancrage dans l'élément de réception (14) par complémentarité de forme, lesquels présentent au moins une section de déformation (7) s'étendant en direction axiale ainsi qu'un évidement axial (9) agencé avant la section de déformation (7) dans la direction périphérique de serrage (F) et recevant le matériau de l'élément de réception (24) déformé au moyen de la section de déformation (7).
PCT/EP2013/061120 2012-07-26 2013-05-29 Élément à filetage extérieur, assemblage par complémentarité de forme et moteur à combustion interne WO2014016020A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13732374.7A EP2831433B1 (fr) 2012-07-26 2013-05-29 Assemblage par complémentarité de forme et moteur à combustion interne
PL13732374T PL2831433T3 (pl) 2012-07-26 2013-05-29 Połączenie kształtowe i silnik spalinowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012106793.7 2012-07-26
DE102012106793.7A DE102012106793A1 (de) 2012-07-26 2012-07-26 Außengewindeelement, Formschlussverbindung sowie Verbrennungsmotor

Publications (1)

Publication Number Publication Date
WO2014016020A1 true WO2014016020A1 (fr) 2014-01-30

Family

ID=48703413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/061120 WO2014016020A1 (fr) 2012-07-26 2013-05-29 Élément à filetage extérieur, assemblage par complémentarité de forme et moteur à combustion interne

Country Status (5)

Country Link
EP (1) EP2831433B1 (fr)
DE (1) DE102012106793A1 (fr)
HU (1) HUE026831T2 (fr)
PL (1) PL2831433T3 (fr)
WO (1) WO2014016020A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10532478B2 (en) 2016-12-09 2020-01-14 Bettcher Industries, Inc. Power operated rotary knife
USD973115S1 (en) 2018-01-26 2022-12-20 Bettcher Industries, Inc. Annular blade

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB203508A (en) * 1922-08-24 1923-09-13 Thomas Turner Hindle Improvements in and relating to set screws for securing wheels, bosses, collars, and the like, upon shafts and the like
US4538947A (en) * 1983-11-25 1985-09-03 Jack Burkholder Set screw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB203508A (en) * 1922-08-24 1923-09-13 Thomas Turner Hindle Improvements in and relating to set screws for securing wheels, bosses, collars, and the like, upon shafts and the like
US4538947A (en) * 1983-11-25 1985-09-03 Jack Burkholder Set screw

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10532478B2 (en) 2016-12-09 2020-01-14 Bettcher Industries, Inc. Power operated rotary knife
US10960564B2 (en) 2016-12-09 2021-03-30 Bettcher Industries, Inc. Power operated rotary knife
US11597113B2 (en) 2016-12-09 2023-03-07 Bettcher Industries, Inc. Power operated rotary knife
US11839988B2 (en) 2016-12-09 2023-12-12 Bettcher Industries, Inc. Power operated rotary knife
USD973115S1 (en) 2018-01-26 2022-12-20 Bettcher Industries, Inc. Annular blade

Also Published As

Publication number Publication date
EP2831433B1 (fr) 2015-12-02
EP2831433A1 (fr) 2015-02-04
PL2831433T3 (pl) 2016-07-29
DE102012106793A1 (de) 2014-01-30
HUE026831T2 (hu) 2016-07-28

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